[rust-dev] Fast inverse square root in Rust

Owen Shepherd owen.shepherd at e43.eu
Sun Jan 12 09:51:14 PST 2014


The "Fast inverse square root" is no longer fast. SSE implements accurate
square root which is faster.

Owen Shepherd
http://owenshepherd.net | owen.shepherd at e43.eu


On 12 January 2014 17:31, Carter Schonwald <carter.schonwald at gmail.com>wrote:

>
> http://static.rust-lang.org/doc/0.9/std/num/trait.Algebraic.html
>
> On Sunday, January 12, 2014, Thad Guidry wrote:
>
>> Where is the fast inverse square root function in Rust ?
>> http://en.wikipedia.org/wiki/Fast_inverse_square_root
>>
>> Anyone know if this semi-accurate function is at a hardware level and
>> built in to Intel chipsets since MMX ?
>>
>> How does this affect LLVM and Rust compilation on 64 bit ?
>>
>> Thanks in advance,
>>
>> --
>> -Thad
>> +ThadGuidry <https://www.google.com/+ThadGuidry>
>> Thad on LinkedIn <http://www.linkedin.com/in/thadguidry/>
>>
>
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